#include<stdio.h>
#include<unistd.h>
#include<sys/types.h>

int main()
{
  printf("process is running,only me!\n");
  sleep(2);
  fork();
  printf("hello world,pid=%d,ppid=%d\n",getpid(),getppid());
  sleep(3);


//  while(1)
//  {
//    printf("I am process,pid=%d,ppid=%d\n",getpid(),getppid());
//    sleep(1);
//  }
//
  return 0;
}
